
class Animal:
    name='animal'

    def shout(self):
        print('animal shout')
        animal=Animal()
        print(animal.name)
        animal.shout()

        class Dog:
            name='dog'

            def __init__(self):
                self.age = 10

            def eat(self):
                print('dog eat')
                dog=Dog()
                print(dog.name)
                dog.eat()

                dog1=Dog()
                print(dog1.name)
                print(Dog.name)

                Dog.name='_dd'
                print(dog1.name)
                print(Dog.name)
                print('------------------------')
                dog2=Dog()
                print(dog2.name)
                print(dog2.age)
                
